A bridge replaces a missing tooth by anchoring a false one to the teeth either side of the gap. It is fixed in place, so unlike a denture it is not taken out.
A dental bridge is an appliance permanently fixed in the mouth to replace missing teeth. It uses the remaining teeth to support and stabilise the new artificial tooth or teeth.
The decision worth thinking about is not whether a bridge works — it does — but that it asks two healthy teeth to carry the cost of one missing one. Whether that trade is worth making depends entirely on the state of those two teeth.
The vocabulary, because you will hear it
A bridge is generally made up of two crowns for the teeth on either side of the gap, with the false tooth rigidly attached in between. The bridge can be made from gold, alloys, porcelain or a combination of these materials.
- Abutment
- One of the teeth either side of the gap that carries the bridge. It is prepared and crowned exactly as a single crown would be.
- Pontic
- The false tooth in the middle, suspended between the abutments. It rests on the gum but is not attached to it, which is why cleaning underneath it matters so much.
- Span
- How many missing teeth the bridge crosses. The longer the span, the more load the abutments carry, and there is a limit past which a bridge is no longer the right answer.
- Connector
- The join between pontic and abutment. It is deliberately solid, which is why you cannot floss through a bridge in the ordinary way.
- Enamel-bonded bridge
- A more conservative design using a metal or porcelain framework with wings resin-bonded to the back of the supporting teeth, so little or no enamel is removed. Also called a resin-bonded or Maryland bridge.
